3 Nov
2013
3 Nov
'13
2:19 p.m.
Win,
This is a serial port or multi serial port for a 9995 system. The I/O
bus is serially clocked with the 9902 being the serial uart. The 9901 is
a parallel I/O part of a system.
the 1488 in the output side of a +-10 or so output channel.
ti had other drivers and receivers that were less prone to blowing up
than the 1488 but they also made the 1488.
I only could find one photo on imgur only thing that showed up was the
one photo with these three chips. There was no "next" or anything but
the 'photos of the day" to the right side of the page I got.
We had a 16way for the microdata 1600 that used these. We got full
modem control x 16 channels on a 11 x 8.5" Microdata board, which was
really high density.
jim
On 11/3/2013 1:25 PM, Win Heagy wrote:
I misplaced this card and cannot figure out which
machine it goes
with. There are no markings on the board beyond what is on the chips.
Any ideas what this might be? That's a DB25 in the lower left of the
full board pic.
There are 2 pictures int this imgur set.
http://imgur.com/3QcLnlZ
Thanks,
Win